1 /* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2014-2016 Broadcom Corporation
4 * Copyright (c) 2016-2018 Broadcom Limited
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
9 */
10
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/netdevice.h>
14 #include <linux/if_vlan.h>
15 #include <linux/interrupt.h>
16 #include <linux/etherdevice.h>
17 #include "bnxt_hsi.h"
18 #include "bnxt.h"
19 #include "bnxt_ulp.h"
20 #include "bnxt_sriov.h"
21 #include "bnxt_vfr.h"
22 #include "bnxt_ethtool.h"
23
24 #ifdef CONFIG_BNXT_SRIOV
bnxt_hwrm_fwd_async_event_cmpl(struct bnxt * bp,struct bnxt_vf_info * vf,u16 event_id)25 static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
26 struct bnxt_vf_info *vf, u16 event_id)
27 {
28 struct hwrm_fwd_async_event_cmpl_input req = {0};
29 struct hwrm_async_event_cmpl *async_cmpl;
30 int rc = 0;
31
32 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
33 if (vf)
34 req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
35 else
36 /* broadcast this async event to all VFs */
37 req.encap_async_event_target_id = cpu_to_le16(0xffff);
38 async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
39 async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
40 async_cmpl->event_id = cpu_to_le16(event_id);
41
42 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
43 if (rc)
44 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
45 rc);
46 return rc;
47 }
48
bnxt_vf_ndo_prep(struct bnxt * bp,int vf_id)49 static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
50 {
51 if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
52 netdev_err(bp->dev, "vf ndo called though PF is down\n");
53 return -EINVAL;
54 }
55 if (!bp->pf.active_vfs) {
56 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
57 return -EINVAL;
58 }
59 if (vf_id >= bp->pf.active_vfs) {
60 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
61 return -EINVAL;
62 }
63 return 0;
64 }
65
bnxt_set_vf_spoofchk(struct net_device * dev,int vf_id,bool setting)66 int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
67 {
68 struct hwrm_func_cfg_input req = {0};
69 struct bnxt *bp = netdev_priv(dev);
70 struct bnxt_vf_info *vf;
71 bool old_setting = false;
72 u32 func_flags;
73 int rc;
74
75 if (bp->hwrm_spec_code < 0x10701)
76 return -ENOTSUPP;
77
78 rc = bnxt_vf_ndo_prep(bp, vf_id);
79 if (rc)
80 return rc;
81
82 vf = &bp->pf.vf[vf_id];
83 if (vf->flags & BNXT_VF_SPOOFCHK)
84 old_setting = true;
85 if (old_setting == setting)
86 return 0;
87
88 func_flags = vf->func_flags;
89 if (setting)
90 func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
91 else
92 func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
93 /*TODO: if the driver supports VLAN filter on guest VLAN,
94 * the spoof check should also include vlan anti-spoofing
95 */
96 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
97 req.fid = cpu_to_le16(vf->fw_fid);
98 req.flags = cpu_to_le32(func_flags);
99 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
100 if (!rc) {
101 vf->func_flags = func_flags;
102 if (setting)
103 vf->flags |= BNXT_VF_SPOOFCHK;
104 else
105 vf->flags &= ~BNXT_VF_SPOOFCHK;
106 }
107 return rc;
108 }
109
bnxt_hwrm_func_qcfg_flags(struct bnxt * bp,struct bnxt_vf_info * vf)110 static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
111 {
112 struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
113 struct hwrm_func_qcfg_input req = {0};
114 int rc;
115
116 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
117 req.fid = cpu_to_le16(vf->fw_fid);
118 mutex_lock(&bp->hwrm_cmd_lock);
119 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
120 if (rc) {
121 mutex_unlock(&bp->hwrm_cmd_lock);
122 return rc;
123 }
124 vf->func_qcfg_flags = le16_to_cpu(resp->flags);
125 mutex_unlock(&bp->hwrm_cmd_lock);
126 return 0;
127 }
128
bnxt_is_trusted_vf(struct bnxt * bp,struct bnxt_vf_info * vf)129 static bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
130 {
131 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
132 return !!(vf->flags & BNXT_VF_TRUST);
133
134 bnxt_hwrm_func_qcfg_flags(bp, vf);
135 return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
136 }
137
bnxt_hwrm_set_trusted_vf(struct bnxt * bp,struct bnxt_vf_info * vf)138 static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
139 {
140 struct hwrm_func_cfg_input req = {0};
141 int rc;
142
143 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
144 return 0;
145
146 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
147 req.fid = cpu_to_le16(vf->fw_fid);
148 if (vf->flags & BNXT_VF_TRUST)
149 req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
150 else
151 req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
152 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
153 return rc;
154 }
155
bnxt_set_vf_trust(struct net_device * dev,int vf_id,bool trusted)156 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
157 {
158 struct bnxt *bp = netdev_priv(dev);
159 struct bnxt_vf_info *vf;
160
161 if (bnxt_vf_ndo_prep(bp, vf_id))
162 return -EINVAL;
163
164 vf = &bp->pf.vf[vf_id];
165 if (trusted)
166 vf->flags |= BNXT_VF_TRUST;
167 else
168 vf->flags &= ~BNXT_VF_TRUST;
169
170 bnxt_hwrm_set_trusted_vf(bp, vf);
171 return 0;
172 }
173
bnxt_get_vf_config(struct net_device * dev,int vf_id,struct ifla_vf_info * ivi)174 int bnxt_get_vf_config(struct net_device *dev, int vf_id,
175 struct ifla_vf_info *ivi)
176 {
177 struct bnxt *bp = netdev_priv(dev);
178 struct bnxt_vf_info *vf;
179 int rc;
180
181 rc = bnxt_vf_ndo_prep(bp, vf_id);
182 if (rc)
183 return rc;
184
185 ivi->vf = vf_id;
186 vf = &bp->pf.vf[vf_id];
187
188 if (is_valid_ether_addr(vf->mac_addr))
189 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
190 else
191 memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
192 ivi->max_tx_rate = vf->max_tx_rate;
193 ivi->min_tx_rate = vf->min_tx_rate;
194 ivi->vlan = vf->vlan;
195 if (vf->flags & BNXT_VF_QOS)
196 ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
197 else
198 ivi->qos = 0;
199 ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
200 ivi->trusted = bnxt_is_trusted_vf(bp, vf);
201 if (!(vf->flags & BNXT_VF_LINK_FORCED))
202 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
203 else if (vf->flags & BNXT_VF_LINK_UP)
204 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
205 else
206 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
207
208 return 0;
209 }
210
bnxt_set_vf_mac(struct net_device * dev,int vf_id,u8 * mac)211 int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
212 {
213 struct hwrm_func_cfg_input req = {0};
214 struct bnxt *bp = netdev_priv(dev);
215 struct bnxt_vf_info *vf;
216 int rc;
217
218 rc = bnxt_vf_ndo_prep(bp, vf_id);
219 if (rc)
220 return rc;
221 /* reject bc or mc mac addr, zero mac addr means allow
222 * VF to use its own mac addr
223 */
224 if (is_multicast_ether_addr(mac)) {
225 netdev_err(dev, "Invalid VF ethernet address\n");
226 return -EINVAL;
227 }
228 vf = &bp->pf.vf[vf_id];
229
230 memcpy(vf->mac_addr, mac, ETH_ALEN);
231 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
232 req.fid = cpu_to_le16(vf->fw_fid);
233 req.flags = cpu_to_le32(vf->func_flags);
234 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
235 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
236 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
237 }
238
bnxt_set_vf_vlan(struct net_device * dev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)239 int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
240 __be16 vlan_proto)
241 {
242 struct hwrm_func_cfg_input req = {0};
243 struct bnxt *bp = netdev_priv(dev);
244 struct bnxt_vf_info *vf;
245 u16 vlan_tag;
246 int rc;
247
248 if (bp->hwrm_spec_code < 0x10201)
249 return -ENOTSUPP;
250
251 if (vlan_proto != htons(ETH_P_8021Q))
252 return -EPROTONOSUPPORT;
253
254 rc = bnxt_vf_ndo_prep(bp, vf_id);
255 if (rc)
256 return rc;
257
258 /* TODO: needed to implement proper handling of user priority,
259 * currently fail the command if there is valid priority
260 */
261 if (vlan_id > 4095 || qos)
262 return -EINVAL;
263
264 vf = &bp->pf.vf[vf_id];
265 vlan_tag = vlan_id;
266 if (vlan_tag == vf->vlan)
267 return 0;
268
269 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
270 req.fid = cpu_to_le16(vf->fw_fid);
271 req.flags = cpu_to_le32(vf->func_flags);
272 req.dflt_vlan = cpu_to_le16(vlan_tag);
273 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
274 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
275 if (!rc)
276 vf->vlan = vlan_tag;
277 return rc;
278 }
279
bnxt_set_vf_bw(struct net_device * dev,int vf_id,int min_tx_rate,int max_tx_rate)280 int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
281 int max_tx_rate)
282 {
283 struct hwrm_func_cfg_input req = {0};
284 struct bnxt *bp = netdev_priv(dev);
285 struct bnxt_vf_info *vf;
286 u32 pf_link_speed;
287 int rc;
288
289 rc = bnxt_vf_ndo_prep(bp, vf_id);
290 if (rc)
291 return rc;
292
293 vf = &bp->pf.vf[vf_id];
294 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
295 if (max_tx_rate > pf_link_speed) {
296 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
297 max_tx_rate, vf_id);
298 return -EINVAL;
299 }
300
301 if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
302 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
303 min_tx_rate, vf_id);
304 return -EINVAL;
305 }
306 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
307 return 0;
308 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
309 req.fid = cpu_to_le16(vf->fw_fid);
310 req.flags = cpu_to_le32(vf->func_flags);
311 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
312 req.max_bw = cpu_to_le32(max_tx_rate);
313 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
314 req.min_bw = cpu_to_le32(min_tx_rate);
315 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
316 if (!rc) {
317 vf->min_tx_rate = min_tx_rate;
318 vf->max_tx_rate = max_tx_rate;
319 }
320 return rc;
321 }
322
bnxt_set_vf_link_state(struct net_device * dev,int vf_id,int link)323 int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
324 {
325 struct bnxt *bp = netdev_priv(dev);
326 struct bnxt_vf_info *vf;
327 int rc;
328
329 rc = bnxt_vf_ndo_prep(bp, vf_id);
330 if (rc)
331 return rc;
332
333 vf = &bp->pf.vf[vf_id];
334
335 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
336 switch (link) {
337 case IFLA_VF_LINK_STATE_AUTO:
338 vf->flags |= BNXT_VF_LINK_UP;
339 break;
340 case IFLA_VF_LINK_STATE_DISABLE:
341 vf->flags |= BNXT_VF_LINK_FORCED;
342 break;
343 case IFLA_VF_LINK_STATE_ENABLE:
344 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
345 break;
346 default:
347 netdev_err(bp->dev, "Invalid link option\n");
348 rc = -EINVAL;
349 break;
350 }
351 if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
352 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
353 ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
354 return rc;
355 }
356
bnxt_set_vf_attr(struct bnxt * bp,int num_vfs)357 static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
358 {
359 int i;
360 struct bnxt_vf_info *vf;
361
362 for (i = 0; i < num_vfs; i++) {
363 vf = &bp->pf.vf[i];
364 memset(vf, 0, sizeof(*vf));
365 }
366 return 0;
367 }
368
bnxt_hwrm_func_vf_resource_free(struct bnxt * bp,int num_vfs)369 static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
370 {
371 int i, rc = 0;
372 struct bnxt_pf_info *pf = &bp->pf;
373 struct hwrm_func_vf_resc_free_input req = {0};
374
375 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
376
377 mutex_lock(&bp->hwrm_cmd_lock);
378 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
379 req.vf_id = cpu_to_le16(i);
380 rc = _hwrm_send_message(bp, &req, sizeof(req),
381 HWRM_CMD_TIMEOUT);
382 if (rc)
383 break;
384 }
385 mutex_unlock(&bp->hwrm_cmd_lock);
386 return rc;
387 }
388
bnxt_free_vf_resources(struct bnxt * bp)389 static void bnxt_free_vf_resources(struct bnxt *bp)
390 {
391 struct pci_dev *pdev = bp->pdev;
392 int i;
393
394 kfree(bp->pf.vf_event_bmap);
395 bp->pf.vf_event_bmap = NULL;
396
397 for (i = 0; i < 4; i++) {
398 if (bp->pf.hwrm_cmd_req_addr[i]) {
399 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
400 bp->pf.hwrm_cmd_req_addr[i],
401 bp->pf.hwrm_cmd_req_dma_addr[i]);
402 bp->pf.hwrm_cmd_req_addr[i] = NULL;
403 }
404 }
405
406 kfree(bp->pf.vf);
407 bp->pf.vf = NULL;
408 }
409
bnxt_alloc_vf_resources(struct bnxt * bp,int num_vfs)410 static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
411 {
412 struct pci_dev *pdev = bp->pdev;
413 u32 nr_pages, size, i, j, k = 0;
414
415 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
416 if (!bp->pf.vf)
417 return -ENOMEM;
418
419 bnxt_set_vf_attr(bp, num_vfs);
420
421 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
422 nr_pages = size / BNXT_PAGE_SIZE;
423 if (size & (BNXT_PAGE_SIZE - 1))
424 nr_pages++;
425
426 for (i = 0; i < nr_pages; i++) {
427 bp->pf.hwrm_cmd_req_addr[i] =
428 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
429 &bp->pf.hwrm_cmd_req_dma_addr[i],
430 GFP_KERNEL);
431
432 if (!bp->pf.hwrm_cmd_req_addr[i])
433 return -ENOMEM;
434
435 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
436 struct bnxt_vf_info *vf = &bp->pf.vf[k];
437
438 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
439 j * BNXT_HWRM_REQ_MAX_SIZE;
440 vf->hwrm_cmd_req_dma_addr =
441 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
442 BNXT_HWRM_REQ_MAX_SIZE;
443 k++;
444 }
445 }
446
447 /* Max 128 VF's */
448 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
449 if (!bp->pf.vf_event_bmap)
450 return -ENOMEM;
451
452 bp->pf.hwrm_cmd_req_pages = nr_pages;
453 return 0;
454 }
455
bnxt_hwrm_func_buf_rgtr(struct bnxt * bp)456 static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
457 {
458 struct hwrm_func_buf_rgtr_input req = {0};
459
460 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
461
462 req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
463 req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
464 req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
465 req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
466 req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
467 req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
468 req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
469
470 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
471 }
472
473 /* Caller holds bp->hwrm_cmd_lock mutex lock */
__bnxt_set_vf_params(struct bnxt * bp,int vf_id)474 static void __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
475 {
476 struct hwrm_func_cfg_input req = {0};
477 struct bnxt_vf_info *vf;
478
479 vf = &bp->pf.vf[vf_id];
480 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
481 req.fid = cpu_to_le16(vf->fw_fid);
482 req.flags = cpu_to_le32(vf->func_flags);
483
484 if (is_valid_ether_addr(vf->mac_addr)) {
485 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
486 memcpy(req.dflt_mac_addr, vf->mac_addr, ETH_ALEN);
487 }
488 if (vf->vlan) {
489 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
490 req.dflt_vlan = cpu_to_le16(vf->vlan);
491 }
492 if (vf->max_tx_rate) {
493 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
494 req.max_bw = cpu_to_le32(vf->max_tx_rate);
495 #ifdef HAVE_IFLA_TX_RATE
496 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
497 req.min_bw = cpu_to_le32(vf->min_tx_rate);
498 #endif
499 }
500 if (vf->flags & BNXT_VF_TRUST)
501 req.flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
502
503 _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
504 }
505
506 /* Only called by PF to reserve resources for VFs, returns actual number of
507 * VFs configured, or < 0 on error.
508 */
bnxt_hwrm_func_vf_resc_cfg(struct bnxt * bp,int num_vfs,bool reset)509 static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
510 {
511 struct hwrm_func_vf_resource_cfg_input req = {0};
512 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
513 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
514 u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
515 struct bnxt_pf_info *pf = &bp->pf;
516 int i, rc = 0, min = 1;
517 u16 vf_msix = 0;
518
519 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
520
521 if (bp->flags & BNXT_FLAG_CHIP_P5) {
522 vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
523 vf_ring_grps = 0;
524 } else {
525 vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
526 }
527 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
528 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
529 if (bp->flags & BNXT_FLAG_AGG_RINGS)
530 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
531 else
532 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
533 vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
534 vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
535 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
536
537 req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
538 req.max_rsscos_ctx = cpu_to_le16(BNXT_VF_MAX_RSS_CTX);
539 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
540 min = 0;
541 req.min_rsscos_ctx = cpu_to_le16(min);
542 }
543 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
544 pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
545 req.min_cmpl_rings = cpu_to_le16(min);
546 req.min_tx_rings = cpu_to_le16(min);
547 req.min_rx_rings = cpu_to_le16(min);
548 req.min_l2_ctxs = cpu_to_le16(min);
549 req.min_vnics = cpu_to_le16(min);
550 req.min_stat_ctx = cpu_to_le16(min);
551 if (!(bp->flags & BNXT_FLAG_CHIP_P5))
552 req.min_hw_ring_grps = cpu_to_le16(min);
553 } else {
554 vf_cp_rings /= num_vfs;
555 vf_tx_rings /= num_vfs;
556 vf_rx_rings /= num_vfs;
557 vf_vnics /= num_vfs;
558 vf_stat_ctx /= num_vfs;
559 vf_ring_grps /= num_vfs;
560
561 req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
562 req.min_tx_rings = cpu_to_le16(vf_tx_rings);
563 req.min_rx_rings = cpu_to_le16(vf_rx_rings);
564 req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
565 req.min_vnics = cpu_to_le16(vf_vnics);
566 req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
567 req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
568 }
569 req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
570 req.max_tx_rings = cpu_to_le16(vf_tx_rings);
571 req.max_rx_rings = cpu_to_le16(vf_rx_rings);
572 req.max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
573 req.max_vnics = cpu_to_le16(vf_vnics);
574 req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
575 req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
576 if (bp->flags & BNXT_FLAG_CHIP_P5)
577 req.max_msix = cpu_to_le16(vf_msix / num_vfs);
578
579 mutex_lock(&bp->hwrm_cmd_lock);
580 for (i = 0; i < num_vfs; i++) {
581 if (reset)
582 __bnxt_set_vf_params(bp, i);
583
584 req.vf_id = cpu_to_le16(pf->first_vf_id + i);
585 rc = _hwrm_send_message(bp, &req, sizeof(req),
586 HWRM_CMD_TIMEOUT);
587 if (rc)
588 break;
589 pf->active_vfs = i + 1;
590 pf->vf[i].fw_fid = pf->first_vf_id + i;
591 }
592 mutex_unlock(&bp->hwrm_cmd_lock);
593 if (pf->active_vfs) {
594 u16 n = pf->active_vfs;
595
596 hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
597 hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
598 hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
599 n;
600 hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
601 hw_resc->max_rsscos_ctxs -= pf->active_vfs;
602 hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
603 hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
604 if (bp->flags & BNXT_FLAG_CHIP_P5)
605 hw_resc->max_irqs -= vf_msix * n;
606
607 rc = pf->active_vfs;
608 }
609 return rc;
610 }
611
612 /* Only called by PF to reserve resources for VFs, returns actual number of
613 * VFs configured, or < 0 on error.
614 */
bnxt_hwrm_func_cfg(struct bnxt * bp,int num_vfs)615 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
616 {
617 u32 rc = 0, mtu, i;
618 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
619 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
620 struct hwrm_func_cfg_input req = {0};
621 struct bnxt_pf_info *pf = &bp->pf;
622 int total_vf_tx_rings = 0;
623 u16 vf_ring_grps;
624
625 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
626
627 /* Remaining rings are distributed equally amongs VF's for now */
628 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
629 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
630 if (bp->flags & BNXT_FLAG_AGG_RINGS)
631 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
632 num_vfs;
633 else
634 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
635 num_vfs;
636 vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
637 vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
638 vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
639 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
640
641 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
642 FUNC_CFG_REQ_ENABLES_MRU |
643 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
644 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
645 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
646 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
647 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
648 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
649 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
650 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
651
652 mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
653 req.mru = cpu_to_le16(mtu);
654 req.mtu = cpu_to_le16(mtu);
655
656 req.num_rsscos_ctxs = cpu_to_le16(1);
657 req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
658 req.num_tx_rings = cpu_to_le16(vf_tx_rings);
659 req.num_rx_rings = cpu_to_le16(vf_rx_rings);
660 req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
661 req.num_l2_ctxs = cpu_to_le16(4);
662
663 req.num_vnics = cpu_to_le16(vf_vnics);
664 /* FIXME spec currently uses 1 bit for stats ctx */
665 req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
666
667 mutex_lock(&bp->hwrm_cmd_lock);
668 for (i = 0; i < num_vfs; i++) {
669 int vf_tx_rsvd = vf_tx_rings;
670
671 req.fid = cpu_to_le16(pf->first_vf_id + i);
672 rc = _hwrm_send_message(bp, &req, sizeof(req),
673 HWRM_CMD_TIMEOUT);
674 if (rc)
675 break;
676 pf->active_vfs = i + 1;
677 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
678 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
679 &vf_tx_rsvd);
680 if (rc)
681 break;
682 total_vf_tx_rings += vf_tx_rsvd;
683 }
684 mutex_unlock(&bp->hwrm_cmd_lock);
685 if (pf->active_vfs) {
686 hw_resc->max_tx_rings -= total_vf_tx_rings;
687 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
688 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
689 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
690 hw_resc->max_rsscos_ctxs -= num_vfs;
691 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
692 hw_resc->max_vnics -= vf_vnics * num_vfs;
693 rc = pf->active_vfs;
694 }
695 return rc;
696 }
697
bnxt_func_cfg(struct bnxt * bp,int num_vfs,bool reset)698 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
699 {
700 if (BNXT_NEW_RM(bp))
701 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
702 else
703 return bnxt_hwrm_func_cfg(bp, num_vfs);
704 }
705
bnxt_cfg_hw_sriov(struct bnxt * bp,int * num_vfs,bool reset)706 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
707 {
708 int rc;
709
710 /* Register buffers for VFs */
711 rc = bnxt_hwrm_func_buf_rgtr(bp);
712 if (rc)
713 return rc;
714
715 /* Reserve resources for VFs */
716 rc = bnxt_func_cfg(bp, *num_vfs, reset);
717 if (rc != *num_vfs) {
718 if (rc <= 0) {
719 netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
720 *num_vfs = 0;
721 return rc;
722 }
723 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
724 rc);
725 *num_vfs = rc;
726 }
727
728 bnxt_ulp_sriov_cfg(bp, *num_vfs);
729 return 0;
730 }
731
bnxt_sriov_enable(struct bnxt * bp,int * num_vfs)732 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
733 {
734 int rc = 0, vfs_supported;
735 int min_rx_rings, min_tx_rings, min_rss_ctxs;
736 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
737 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
738 int avail_cp, avail_stat;
739
740 /* Check if we can enable requested num of vf's. At a mininum
741 * we require 1 RX 1 TX rings for each VF. In this minimum conf
742 * features like TPA will not be available.
743 */
744 vfs_supported = *num_vfs;
745
746 avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
747 avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
748 avail_cp = min_t(int, avail_cp, avail_stat);
749
750 while (vfs_supported) {
751 min_rx_rings = vfs_supported;
752 min_tx_rings = vfs_supported;
753 min_rss_ctxs = vfs_supported;
754
755 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
756 if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
757 min_rx_rings)
758 rx_ok = 1;
759 } else {
760 if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
761 min_rx_rings)
762 rx_ok = 1;
763 }
764 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
765 avail_cp < min_rx_rings)
766 rx_ok = 0;
767
768 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
769 avail_cp >= min_tx_rings)
770 tx_ok = 1;
771
772 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
773 min_rss_ctxs)
774 rss_ok = 1;
775
776 if (tx_ok && rx_ok && rss_ok)
777 break;
778
779 vfs_supported--;
780 }
781
782 if (!vfs_supported) {
783 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
784 return -EINVAL;
785 }
786
787 if (vfs_supported != *num_vfs) {
788 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
789 *num_vfs, vfs_supported);
790 *num_vfs = vfs_supported;
791 }
792
793 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
794 if (rc)
795 goto err_out1;
796
797 rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
798 if (rc)
799 goto err_out2;
800
801 rc = pci_enable_sriov(bp->pdev, *num_vfs);
802 if (rc)
803 goto err_out2;
804
805 return 0;
806
807 err_out2:
808 /* Free the resources reserved for various VF's */
809 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
810
811 err_out1:
812 bnxt_free_vf_resources(bp);
813
814 return rc;
815 }
816
bnxt_sriov_disable(struct bnxt * bp)817 void bnxt_sriov_disable(struct bnxt *bp)
818 {
819 u16 num_vfs = pci_num_vf(bp->pdev);
820
821 if (!num_vfs)
822 return;
823
824 /* synchronize VF and VF-rep create and destroy */
825 mutex_lock(&bp->sriov_lock);
826 bnxt_vf_reps_destroy(bp);
827
828 if (pci_vfs_assigned(bp->pdev)) {
829 bnxt_hwrm_fwd_async_event_cmpl(
830 bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
831 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
832 num_vfs);
833 } else {
834 pci_disable_sriov(bp->pdev);
835 /* Free the HW resources reserved for various VF's */
836 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
837 }
838 mutex_unlock(&bp->sriov_lock);
839
840 bnxt_free_vf_resources(bp);
841
842 bp->pf.active_vfs = 0;
843 /* Reclaim all resources for the PF. */
844 rtnl_lock();
845 bnxt_restore_pf_fw_resources(bp);
846 rtnl_unlock();
847
848 bnxt_ulp_sriov_cfg(bp, 0);
849 }
850
bnxt_sriov_configure(struct pci_dev * pdev,int num_vfs)851 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
852 {
853 struct net_device *dev = pci_get_drvdata(pdev);
854 struct bnxt *bp = netdev_priv(dev);
855
856 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
857 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
858 return 0;
859 }
860
861 rtnl_lock();
862 if (!netif_running(dev)) {
863 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
864 rtnl_unlock();
865 return 0;
866 }
867 if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
868 netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
869 rtnl_unlock();
870 return 0;
871 }
872 bp->sriov_cfg = true;
873 rtnl_unlock();
874
875 if (pci_vfs_assigned(bp->pdev)) {
876 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
877 num_vfs = 0;
878 goto sriov_cfg_exit;
879 }
880
881 /* Check if enabled VFs is same as requested */
882 if (num_vfs && num_vfs == bp->pf.active_vfs)
883 goto sriov_cfg_exit;
884
885 /* if there are previous existing VFs, clean them up */
886 bnxt_sriov_disable(bp);
887 if (!num_vfs)
888 goto sriov_cfg_exit;
889
890 bnxt_sriov_enable(bp, &num_vfs);
891
892 sriov_cfg_exit:
893 bp->sriov_cfg = false;
894 wake_up(&bp->sriov_cfg_wait);
895
896 return num_vfs;
897 }
898
bnxt_hwrm_fwd_resp(struct bnxt * bp,struct bnxt_vf_info * vf,void * encap_resp,__le64 encap_resp_addr,__le16 encap_resp_cpr,u32 msg_size)899 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
900 void *encap_resp, __le64 encap_resp_addr,
901 __le16 encap_resp_cpr, u32 msg_size)
902 {
903 int rc = 0;
904 struct hwrm_fwd_resp_input req = {0};
905
906 if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
907 return -EINVAL;
908
909 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
910
911 /* Set the new target id */
912 req.target_id = cpu_to_le16(vf->fw_fid);
913 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
914 req.encap_resp_len = cpu_to_le16(msg_size);
915 req.encap_resp_addr = encap_resp_addr;
916 req.encap_resp_cmpl_ring = encap_resp_cpr;
917 memcpy(req.encap_resp, encap_resp, msg_size);
918
919 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
920 if (rc)
921 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
922 return rc;
923 }
924
bnxt_hwrm_fwd_err_resp(struct bnxt * bp,struct bnxt_vf_info * vf,u32 msg_size)925 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
926 u32 msg_size)
927 {
928 int rc = 0;
929 struct hwrm_reject_fwd_resp_input req = {0};
930
931 if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
932 return -EINVAL;
933
934 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
935 /* Set the new target id */
936 req.target_id = cpu_to_le16(vf->fw_fid);
937 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
938 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
939
940 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
941 if (rc)
942 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
943 return rc;
944 }
945
bnxt_hwrm_exec_fwd_resp(struct bnxt * bp,struct bnxt_vf_info * vf,u32 msg_size)946 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
947 u32 msg_size)
948 {
949 int rc = 0;
950 struct hwrm_exec_fwd_resp_input req = {0};
951
952 if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
953 return -EINVAL;
954
955 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
956 /* Set the new target id */
957 req.target_id = cpu_to_le16(vf->fw_fid);
958 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
959 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
960
961 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
962 if (rc)
963 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
964 return rc;
965 }
966
bnxt_vf_configure_mac(struct bnxt * bp,struct bnxt_vf_info * vf)967 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
968 {
969 u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
970 struct hwrm_func_vf_cfg_input *req =
971 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
972
973 /* Allow VF to set a valid MAC address, if trust is set to on or
974 * if the PF assigned MAC address is zero
975 */
976 if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
977 bool trust = bnxt_is_trusted_vf(bp, vf);
978
979 if (is_valid_ether_addr(req->dflt_mac_addr) &&
980 (trust || !is_valid_ether_addr(vf->mac_addr) ||
981 ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
982 ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
983 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
984 }
985 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
986 }
987 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
988 }
989
bnxt_vf_validate_set_mac(struct bnxt * bp,struct bnxt_vf_info * vf)990 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
991 {
992 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
993 struct hwrm_cfa_l2_filter_alloc_input *req =
994 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
995 bool mac_ok = false;
996
997 if (!is_valid_ether_addr((const u8 *)req->l2_addr))
998 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
999
1000 /* Allow VF to set a valid MAC address, if trust is set to on.
1001 * Or VF MAC address must first match MAC address in PF's context.
1002 * Otherwise, it must match the VF MAC address if firmware spec >=
1003 * 1.2.2
1004 */
1005 if (bnxt_is_trusted_vf(bp, vf)) {
1006 mac_ok = true;
1007 } else if (is_valid_ether_addr(vf->mac_addr)) {
1008 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1009 mac_ok = true;
1010 } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1011 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1012 mac_ok = true;
1013 } else {
1014 /* There are two cases:
1015 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1016 * to the PF and so it doesn't have to match
1017 * 2.Allow VF to modify it's own MAC when PF has not assigned a
1018 * valid MAC address and firmware spec >= 0x10202
1019 */
1020 mac_ok = true;
1021 }
1022 if (mac_ok)
1023 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1024 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1025 }
1026
bnxt_vf_set_link(struct bnxt * bp,struct bnxt_vf_info * vf)1027 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1028 {
1029 int rc = 0;
1030
1031 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1032 /* real link */
1033 rc = bnxt_hwrm_exec_fwd_resp(
1034 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1035 } else {
1036 struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
1037 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1038
1039 phy_qcfg_req =
1040 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1041 mutex_lock(&bp->hwrm_cmd_lock);
1042 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1043 sizeof(phy_qcfg_resp));
1044 mutex_unlock(&bp->hwrm_cmd_lock);
1045 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1046 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1047 phy_qcfg_resp.valid = 1;
1048
1049 if (vf->flags & BNXT_VF_LINK_UP) {
1050 /* if physical link is down, force link up on VF */
1051 if (phy_qcfg_resp.link !=
1052 PORT_PHY_QCFG_RESP_LINK_LINK) {
1053 phy_qcfg_resp.link =
1054 PORT_PHY_QCFG_RESP_LINK_LINK;
1055 phy_qcfg_resp.link_speed = cpu_to_le16(
1056 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1057 phy_qcfg_resp.duplex_cfg =
1058 PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1059 phy_qcfg_resp.duplex_state =
1060 PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1061 phy_qcfg_resp.pause =
1062 (PORT_PHY_QCFG_RESP_PAUSE_TX |
1063 PORT_PHY_QCFG_RESP_PAUSE_RX);
1064 }
1065 } else {
1066 /* force link down */
1067 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1068 phy_qcfg_resp.link_speed = 0;
1069 phy_qcfg_resp.duplex_state =
1070 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1071 phy_qcfg_resp.pause = 0;
1072 }
1073 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1074 phy_qcfg_req->resp_addr,
1075 phy_qcfg_req->cmpl_ring,
1076 sizeof(phy_qcfg_resp));
1077 }
1078 return rc;
1079 }
1080
bnxt_vf_req_validate_snd(struct bnxt * bp,struct bnxt_vf_info * vf)1081 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1082 {
1083 int rc = 0;
1084 struct input *encap_req = vf->hwrm_cmd_req_addr;
1085 u32 req_type = le16_to_cpu(encap_req->req_type);
1086
1087 switch (req_type) {
1088 case HWRM_FUNC_VF_CFG:
1089 rc = bnxt_vf_configure_mac(bp, vf);
1090 break;
1091 case HWRM_CFA_L2_FILTER_ALLOC:
1092 rc = bnxt_vf_validate_set_mac(bp, vf);
1093 break;
1094 case HWRM_FUNC_CFG:
1095 /* TODO Validate if VF is allowed to change mac address,
1096 * mtu, num of rings etc
1097 */
1098 rc = bnxt_hwrm_exec_fwd_resp(
1099 bp, vf, sizeof(struct hwrm_func_cfg_input));
1100 break;
1101 case HWRM_PORT_PHY_QCFG:
1102 rc = bnxt_vf_set_link(bp, vf);
1103 break;
1104 default:
1105 break;
1106 }
1107 return rc;
1108 }
1109
bnxt_hwrm_exec_fwd_req(struct bnxt * bp)1110 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1111 {
1112 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1113
1114 /* Scan through VF's and process commands */
1115 while (1) {
1116 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1117 if (vf_id >= active_vfs)
1118 break;
1119
1120 clear_bit(vf_id, bp->pf.vf_event_bmap);
1121 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1122 i = vf_id + 1;
1123 }
1124 }
1125
bnxt_update_vf_mac(struct bnxt * bp)1126 void bnxt_update_vf_mac(struct bnxt *bp)
1127 {
1128 struct hwrm_func_qcaps_input req = {0};
1129 struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
1130
1131 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
1132 req.fid = cpu_to_le16(0xffff);
1133
1134 mutex_lock(&bp->hwrm_cmd_lock);
1135 if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
1136 goto update_vf_mac_exit;
1137
1138 /* Store MAC address from the firmware. There are 2 cases:
1139 * 1. MAC address is valid. It is assigned from the PF and we
1140 * need to override the current VF MAC address with it.
1141 * 2. MAC address is zero. The VF will use a random MAC address by
1142 * default but the stored zero MAC will allow the VF user to change
1143 * the random MAC address using ndo_set_mac_address() if he wants.
1144 */
1145 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
1146 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1147
1148 /* overwrite netdev dev_addr with admin VF MAC */
1149 if (is_valid_ether_addr(bp->vf.mac_addr))
1150 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
1151 update_vf_mac_exit:
1152 mutex_unlock(&bp->hwrm_cmd_lock);
1153 }
1154
bnxt_approve_mac(struct bnxt * bp,u8 * mac,bool strict)1155 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1156 {
1157 struct hwrm_func_vf_cfg_input req = {0};
1158 int rc = 0;
1159
1160 if (!BNXT_VF(bp))
1161 return 0;
1162
1163 if (bp->hwrm_spec_code < 0x10202) {
1164 if (is_valid_ether_addr(bp->vf.mac_addr))
1165 rc = -EADDRNOTAVAIL;
1166 goto mac_done;
1167 }
1168 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
1169 req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1170 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
1171 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
1172 mac_done:
1173 if (rc && strict) {
1174 rc = -EADDRNOTAVAIL;
1175 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1176 mac);
1177 return rc;
1178 }
1179 return 0;
1180 }
1181 #else
1182
bnxt_cfg_hw_sriov(struct bnxt * bp,int * num_vfs,bool reset)1183 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1184 {
1185 if (*num_vfs)
1186 return -EOPNOTSUPP;
1187 return 0;
1188 }
1189
bnxt_sriov_disable(struct bnxt * bp)1190 void bnxt_sriov_disable(struct bnxt *bp)
1191 {
1192 }
1193
bnxt_hwrm_exec_fwd_req(struct bnxt * bp)1194 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1195 {
1196 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1197 }
1198
bnxt_update_vf_mac(struct bnxt * bp)1199 void bnxt_update_vf_mac(struct bnxt *bp)
1200 {
1201 }
1202
bnxt_approve_mac(struct bnxt * bp,u8 * mac,bool strict)1203 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1204 {
1205 return 0;
1206 }
1207 #endif
1208
